Five-eccentric center butterfly valve resistant to high temperature and high pressure

Abstract

The utility model relates to the technical field of five-eccentric butterfly valves, in particular to a high-temperature-resistant and high-pressure-resistant five-eccentric butterfly valve which comprises a butterfly valve body, a circulation opening is formed in the surface of the butterfly valve body, a limiting flange is fixedly connected to the inner wall of the circulation opening, a supporting cylinder is fixedly connected to the upper surface of the butterfly valve body, and an opening is formed in the upper surface of the supporting cylinder. A maintenance baffle is arranged on the inner wall of the opening of the supporting cylinder. According to the high-temperature-resistant and high-pressure-resistant five-eccentric butterfly valve, the limiting flange and the sealing valve plate are arranged, so that when the butterfly valve works, the axis of the transmission connecting rod deviates from the center of the sealing valve plate, and when the valve is opened, the sealing valve plate can be rapidly separated from the limiting flange, abrasion is remarkably reduced, and opening resistance is reduced; and the elastic metal sheets on the surfaces of the limiting flanges and the sealing valve plate automatically compensate a sealing surface gap caused by thermal expansion or pressure change, so that the stable sealing performance is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to five eccentric butterfly valve technical field, concretely is the five eccentric butterfly valve of high temperature and high pressure resistance. BACKGROUND

[0002] The structural characteristics of the five eccentric butterfly valve are that the valve rod axis deviates from the butterfly plate center, so that the upper and lower ends are no longer the rotation axis when the butterfly plate rotates, the excessive extrusion between the butterfly plate and the valve seat is reduced, the valve rod axis deviates from the body center, the butterfly plate can quickly leave the valve seat after the valve is opened, unnecessary extrusion and scraping are reduced, the valve seat center line deviates from the valve body center line, the force action mode is changed, which helps to reduce the opening resistance moment, the valve body sealing surface center line deviates from the valve body center line, the sealing structure is optimized, the sealing effect is better, the butterfly plate sealing surface conical axis deviates from the valve rod axis, the sealing structure is fundamentally changed, torque sealing is realized, the valve rod drives the butterfly plate to rotate around the axis, and the opening and closing and flow regulation of the valve are realized.

[0003] The existing five eccentric butterfly valve drives the valve plate through the rotation of the valve rod to control the opening of the valve and thus control the water flow movement, generally limits the valve rod through the self-locking of the worm gear and the worm, but the worm gear and the worm are not easy to repair after being damaged, which limits the rotation of the valve rod and reduces the efficiency during maintenance. UTILITY MODEL CONTENTS

[0004] The utility model discloses a five eccentric butterfly valve of high temperature and high pressure resistance, which aims to solve the problem that the valve rod is limited in rotation and the efficiency during maintenance is reduced when the worm gear and the worm are not easy to repair after being damaged.

[0005] To achieve the above object, the utility model provides the following technical scheme: a five eccentric butterfly valve of high temperature and high pressure resistance, including butterfly valve body, its surface is provided with flow opening, the inner wall of flow opening is fixedly connected with limiting baffle, the upper surface of butterfly valve body is fixedly connected with supporting cylinder, the upper surface of supporting cylinder is provided with opening, and the inner wall of supporting cylinder opening is provided with maintenance baffle, the side surface of supporting cylinder is penetrated and is installed with adjusting worm, the top surface of flow opening cavity is penetrated and is installed with transmission connecting rod, the upper end of transmission connecting rod penetrates the bottom surface of supporting cylinder cavity, the upper surface of transmission connecting rod is provided with first installation slot, the first installation slot is connected with positioning clamping column, the upper end outer surface of positioning clamping column is fixedly connected with locking clamping block, the cavity of supporting cylinder is installed with adjusting worm gear, the upper surface of adjusting worm gear is provided with locking slot, the lower surface of adjusting worm gear is installed with supporting roller, the bottom surface of the cavity of supporting cylinder is fixedly connected with supporting clamping plate, and the lower end of transmission connecting rod is fixedly connected with sealing valve plate.

[0006] Preferably, the limiting baffle is eccentrically arranged with the center of the butterfly valve body, the limiting baffle is annular structure, the surface of the limiting baffle is provided with an opening, and the opening of the limiting baffle is square design.

[0007] By the above technical scheme, the limiting baffle is eccentrically arranged with the center of the butterfly valve body, when the valve is opened, the sealing valve plate can quickly separate from the limiting baffle, which significantly reduces the wear and reduces the opening resistance

[0008] Preferably, the supporting cylinder is rotationally connected with the maintenance baffle, the adjusting worm is rotationally connected with the supporting cylinder, and the transmission connecting rod is rotationally connected with the butterfly valve body and the supporting cylinder respectively.

[0009] By the above technical scheme, the supporting cylinder is rotationally connected with the maintenance baffle, which is convenient for maintenance and repair, and the adjusting worm drives the adjusting worm gear to rotate.

[0010] Preferably, the upper end inner wall of the first mounting groove is fixed with a limiting block, the first mounting groove is slidingly connected with the positioning clamping column through the limiting block, and a spring is connected between the positioning clamping column and the first mounting groove.

[0011] By the above technical scheme, the first mounting groove supports the positioning clamping column to move vertically.

[0012] Preferably, the locking block is cross-shaped design, the locking slot is cross-shaped design, the locking slot is connected with the locking block in a clamping manner, the supporting roller is arranged in a circumferential array, the supporting clamping plate is annular design, the vertical cross section of the supporting clamping plate is L-shaped design, and the adjusting worm gear is meshed with the adjusting worm.

[0013] By the above technical scheme, the cross-shaped design of the locking block facilitates the clamping of the locking block and the locking slot, and the annular design of the supporting clamping plate facilitates the limiting of the supporting roller.

[0014] Preferably, the sealing valve plate is conical frustum design, one end of the outer surface of the sealing valve plate is square design, and the other end of the outer surface of the sealing valve plate is arc design.

[0015] By the above technical scheme, the conical frustum design of the sealing valve plate optimizes the stress distribution of the sealing valve plate in the medium and reduces the fluid resistance.

[0016] Preferably, the surfaces of the sealing valve plate and the limiting baffle are provided with elastic metal sheets, the transmission connecting rod and the sealing valve plate are provided with sealing packing, and the raw material of the sealing packing of the transmission connecting rod and the sealing valve plate is graphite and polytetrafluoroethylene.

[0017] Adopting the technical scheme, the elastic metal sheet is arranged on the surface of the sealing valve plate and the limiting stopper, when the valve is in a high-temperature and high-pressure environment, the elastic element can automatically compensate the gap between the sealing surfaces caused by thermal expansion or pressure change, and the sealing performance is stable.

[0018] Compared with the prior art, the five-eccentric butterfly valve with high temperature resistance and high pressure resistance has the advantages that:

[0019] 1. The limiting stopper and the sealing valve plate are arranged, so that when the device works, the center of the transmission connecting rod is deviated from the center of the sealing valve plate, when the valve is opened, the sealing valve plate can quickly separate from the limiting stopper, the wear is significantly reduced, the opening resistance is reduced, when the valve is in a high-temperature and high-pressure environment, the elastic metal sheet on the surface of the limiting stopper and the sealing valve plate automatically compensates the gap between the sealing surfaces caused by thermal expansion or pressure change, the sealing performance is stable, the stress of the sealing valve plate is uniformly distributed in the medium, and the fluid resistance is reduced.

[0020] 2. The locking block and the locking slot are arranged, so that when the device works, the locking block is driven to slide down by the positioning clamping column, the locking block is clamped and locked with the locking slot and the adjusting worm gear, the opening and closing of the valve are facilitated by rotating the adjusting worm gear to drive the adjusting worm gear and the transmission connecting rod, when the adjusting worm gear and the adjusting worm gear are damaged and fail, the locking block is unlocked from the locking slot by sliding the positioning clamping column upward, the positioning clamping column is rotated, the positioning clamping column drives the transmission connecting rod to rotate, the transmission connecting rod is conveniently adjusted, and the convenience of maintenance and repair of the device is improved.

[0021] 3. The supporting roller and the supporting clamping plate are arranged, so that when the device works, the adjusting worm gear is supported by the supporting roller, the stability of the rotation of the adjusting worm gear is improved, and the supporting roller is positioned by the annular supporting clamping plate, so that the supporting roller is prevented from deviating, and the accuracy of the position of the adjusting worm gear is improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a three-dimensional structure schematic view of the connection between the butterfly valve body and the flow opening of the utility model;

[0023] Figure 2 It is a three-dimensional structure schematic view of the connection between the supporting cylinder and the maintenance baffle of the utility model;

[0024] Figure 3 It is a three-dimensional structure schematic view of the connection between the supporting cylinder and the adjusting worm of the utility model;

[0025] Figure 4 It is a three-dimensional structure schematic view of the connection between the transmission connecting rod and the first mounting slot of the utility model;

[0026] Figure 5 It is a three-dimensional structure schematic view of the connection between the adjusting worm gear and the supporting roller of the utility model;

[0027] Figure 6 The utility model discloses positioning card post and locking card block connection three -dimensional structure schematic diagram.

[0028] In the figure: 1, butterfly valve body;2, flow through opening;3, limit baffle;4, support cylinder;5, maintenance baffle;6, adjusting worm;7, transmission connecting rod;8, first installation groove;9, positioning card post;10, locking card block;11, locking slot;12, adjusting worm wheel;13, support roller;14, support card plate;15, sealing valve plate. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0030] Please refer to Figures 1-6 The utility model provides technical scheme: five eccentric butterfly valve of high temperature and high pressure resistance, including butterfly valve body 1, flow through opening 2, limit baffle 3, support cylinder 4, maintenance baffle 5, adjusting worm 6, transmission connecting rod 7, first installation groove 8, positioning card post 9, locking card block 10, locking slot 11, adjusting worm wheel 12, support roller 13, support card plate 14 and sealing valve plate 15, butterfly valve body 1, its surface is seted up with flow through opening 2, the inner wall fixed connection of flow through opening 2 is limited baffle 3, limit baffle 3 and butterfly valve body 1 center are eccentric and are arranged, and limit baffle 3 is annular structure, and limit baffle 3 surface is provided with opening, and the opening of limit baffle 3 is square design, when using the device, rotating adjusting worm 6, because adjusting worm wheel 12 and adjusting worm 6 constitute meshing connection, adjusting worm 6 rotation drives adjusting worm wheel 12 to rotate, when adjusting worm wheel 12 rotates, support roller 13 rolls under the limit of support card plate 14, plays the role of supporting and stabilizing adjusting worm wheel 12, and adjusting worm wheel 12 rotates through the clamping of locking slot 11 and locking card block 10, drives positioning card post 9 to rotate, and positioning card post 9 drives transmission connecting rod 7 to rotate, and then makes sealing valve plate 15 rotate.

[0031] The upper surface of the butterfly valve body 1 is fixedly connected with a supporting cylinder 4, the upper surface of the supporting cylinder 4 is provided with an opening, and the inner wall of the opening of the supporting cylinder 4 is provided with a maintenance baffle 5, the side surface of the supporting cylinder 4 is penetratedly installed with an adjusting worm 6, the top surface of the cavity of the flow-through opening 2 is penetratedly installed with a transmission connecting rod 7, the supporting cylinder 4 and the maintenance baffle 5 constitute a rotary connection, the adjusting worm 6 and the supporting cylinder 4 constitute a rotary connection, the transmission connecting rod 7 and the butterfly valve body 1 and the supporting cylinder 4 constitute a rotary connection, the upper end inner wall of the first installation groove 8 is fixedly provided with a limiting block, the first installation groove 8 and the positioning clamping column 9 constitute a sliding connection through the limiting block, and a spring is connected between the positioning clamping column 9 and the first installation groove 8, the limiting baffle 3 is eccentrically arranged with the center of the butterfly valve body 1, the center of the transmission connecting rod 7 deviates from the center of the sealing valve plate 15, the sealing valve plate 15 can quickly separate from the limiting baffle 3 when the valve is opened, thereby significantly reducing the wear and reducing the opening resistance.

[0032] The upper end of the transmission connecting rod 7 penetrates the bottom surface of the cavity of the supporting cylinder 4, the upper surface of the transmission connecting rod 7 is provided with a first installation groove 8, the first installation groove 8 is connected with a positioning clamping column 9, the upper end of the positioning clamping column 9 is fixedly connected with a locking clamping block 10, the cavity of the supporting cylinder 4 is installed with an adjusting worm wheel 12, the upper surface of the adjusting worm wheel 12 is provided with a locking slot 11, the locking clamping block 10 is designed as a cross shape, the locking slot 11 is designed as a cross shape, and the locking slot 11 and the locking clamping block 10 constitute a clamping connection, the supporting rollers 13 are arranged in a circumferential array, the supporting clamping plate 14 is designed as a ring shape, and the vertical cross section of the supporting clamping plate 14 is designed as an L shape, the adjusting worm wheel 12 and the adjusting worm 6 constitute an engagement connection, the adjusting worm 6 is reversely rotated, the adjusting worm wheel 12 is reversely rotated, and the transmission connecting rod 7 is reversely rotated, so that the sealing valve plate 15 is rotated to a closed position, and the sealing is realized in cooperation with the limiting baffle 3, under the high temperature and high pressure environment, the elastic metal sheets on the surfaces of the sealing valve plate 15 and the limiting baffle 3 can automatically compensate the gap between the sealing surfaces caused by thermal expansion or pressure change, so as to ensure the stability of the sealing performance, and the sealing filler made of graphite and polytetrafluoroethylene arranged between the transmission connecting rod 7 and the sealing valve plate 15 further enhances the sealing effect.

[0033] The lower surface of the adjusting worm wheel 12 is provided with a supporting roller 13, the bottom surface of the cavity of the supporting cylinder 4 is fixedly connected with a supporting clamping plate 14, the lower end of the transmission connecting rod 7 is fixedly connected with a sealing valve plate 15, the sealing valve plate 15 is designed in a conical frustum shape, the outer surface of one end of the sealing valve plate 15 is designed in a square shape, and the outer surface of the other end of the sealing valve plate 15 is designed in an arc shape, the surfaces of the sealing valve plate 15 and the limiting stop edge 3 are both provided with elastic metal sheets, the transmission connecting rod 7 and the sealing valve plate 15 are provided with sealing fillers, and the raw materials of the sealing fillers of the transmission connecting rod 7 and the sealing valve plate 15 are graphite and polytetrafluoroethylene, when the adjusting worm 6 and the adjusting worm wheel 12 are damaged and fail, the positioning clamping column 9 is slid upward, the locking clamping block 10 is unlocked, and the locking slot 11 is unlocked, at this time, the positioning clamping column 9 is rotated, the positioning clamping column 9 drives the transmission connecting rod 7 to rotate, the transmission connecting rod 7 and the sealing valve plate 15 are conveniently adjusted in rotation, the convenience of maintenance and repair of the device is increased, and the supporting cylinder 4 is rotationally connected with the maintenance baffle 5, so that the maintenance baffle 5 is conveniently opened for internal maintenance and repair.

[0034] Working principle: when the high-temperature and high-pressure resistant five-eccentric butterfly valve is used, the adjusting worm 6 is first rotated to drive the adjusting worm wheel 12 to rotate, the supporting roller 13 rolls on the surface of the supporting clamping plate 14 to assist in stabilization, the adjusting worm wheel 12 drives the transmission connecting rod 7 through the locking clamping block 10 and the locking slot 11, the sealing valve plate 15 designed in eccentricity is quickly separated from the limiting stop edge 3 to realize opening, reverse operation is performed to close the valve, when the temperature and pressure are high, the elastic metal sheets between the limiting stop edge 3 and the sealing valve plate 15 compensate the sealing gap, the sealing fillers enhance sealing, when the adjusting component is damaged, the positioning clamping column 9 is slid upward to unlock the locking clamping block 10 and the locking slot 11, the positioning clamping column 9 can be directly rotated to drive the transmission connecting rod 7 to adjust, the maintenance baffle 5 can be rotationally opened, the supporting cylinder 4 is conveniently repaired, and the practicability of the whole device is increased.

[0035] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-temperature and high-pressure resistant five-eccentric butterfly valve, comprising a butterfly valve body (1), the surface of which is provided with a flow-through opening (2), characterized in that: The inner wall of the flow opening (2) is fixedly connected with a limiting baffle (3), the upper surface of the butterfly valve body (1) is fixedly connected with a supporting cylinder (4), the upper surface of the supporting cylinder (4) is provided with an opening, the inner wall of the opening of the supporting cylinder (4) is provided with a maintenance baffle (5), the side surface of the supporting cylinder (4) is penetratedly installed with an adjusting worm (6), the top surface of the cavity of the flow opening (2) is penetratedly installed with a transmission connecting rod (7), the upper end of the transmission connecting rod (7) penetrates the bottom surface of the cavity of the supporting cylinder (4), the upper surface of the transmission connecting rod (7) is provided with a first installation slot (8), the first installation slot (8) is connected with a positioning clamping column (9), the upper end of the positioning clamping column (9) is fixedly connected with a locking clamping block (10), the cavity of the supporting cylinder (4) is installed with an adjusting worm wheel (12), the upper surface of the adjusting worm wheel (12) is provided with a locking slot (11), the lower surface of the adjusting worm wheel (12) is installed with a supporting roller (13), the bottom surface of the cavity of the supporting cylinder (4) is fixedly connected with a supporting clamping plate (14), and the lower end of the transmission connecting rod (7) is fixedly connected with a sealing valve plate (15).

2. The high temperature and high pressure resistant five-eccentric butterfly valve according to claim 1, characterized in that: The limiting baffle (3) is eccentrically arranged with the center of the butterfly valve body (1), the limiting baffle (3) is in a ring structure, and the surface of the limiting baffle (3) is provided with an opening, and the opening of the limiting baffle (3) is designed in a square shape.

3. The high temperature and high pressure resistant five-eccentric butterfly valve according to claim 1, characterized in that: The supporting cylinder (4) and the maintenance baffle (5) are rotationally connected, the adjusting worm (6) and the supporting cylinder (4) are rotationally connected, and the transmission connecting rod (7) is rotationally connected with the butterfly valve body (1) and the supporting cylinder (4) respectively.

4. The high temperature and high pressure resistant five-eccentric butterfly valve according to claim 1, characterized in that: The upper end of the first installation slot (8) is fixedly connected with a limiting block, the first installation slot (8) is slidably connected with the positioning clamping column (9) through the limiting block, and a spring is connected between the positioning clamping column (9) and the first installation slot (8).

5. The high temperature and high pressure resistant five-eccentric butterfly valve according to claim 1, characterized in that: The locking clamping block (10) is designed in a cross shape, the locking slot (11) is designed in a cross shape, the locking slot (11) is clampedly connected with the locking clamping block (10), the supporting rollers (13) are arranged in a circumferential array, the supporting clamping plate (14) is designed in a ring shape, the vertical cross section of the supporting clamping plate (14) is designed in an L shape, and the adjusting worm wheel (12) is meshingly connected with the adjusting worm (6).

6. The high temperature and high pressure resistant five-eccentric butterfly valve according to claim 1, characterized in that: The sealing valve plate (15) is designed in a frustum shape, one end of the outer surface of the sealing valve plate (15) is designed in a square shape, and the other end of the outer surface of the sealing valve plate (15) is designed in an arc shape.

7. The high temperature and high pressure resistant five-eccentric butterfly valve according to claim 1, characterized in that: The surfaces of the sealing valve plate (15) and the limiting baffle (3) are provided with elastic metal sheets, the transmission connecting rod (7) and the sealing valve plate (15) are provided with sealing fillers, and the raw materials of the sealing fillers of the transmission connecting rod (7) and the sealing valve plate (15) are graphite and polytetrafluoroethylene.

Images